摘要:
In a rotary electric machine such as a vehicle AC generator, each slot of a stator core has chamfered corners extending over a distance longer than thickness of the core sheet and burrs extending from the core sheet in one direction so that the chamfered corners and burrs join the core sheet of adjacent layers together.
摘要:
The invention relates to a two-pole motor's stator for a household fan having slots with tapered close end and greater width by enlarging the stator's middle hole (for accommodating a rotor with greater diameter) under the precondition without influence on the stator's yoke height and the capacity (or area) of each slot. Therefore, the output torsion of the rotor is enhanced and the stator's yoke height is increased while the iron loss and the temperature rise are reducible for upgrading the rotation efficiency. Meanwhile, the high slot-occupied ratio to affect the assembling efficiency is also avoidable.
摘要:
An electrical machine stator core and method for reducing electromagnetic losses and the consequent heating of the core. The stator core makes use of laminations made from an iron-aluminum alloy at the core-ends of the core, while laminations between the core-ends are formed of a ferromagnetic alloy different from the iron-aluminum alloy. Use of iron-aluminum alloy laminations at the core-ends makes possible a relatively simple technique for generator uprate, by removing laminations located at the core-ends of the stator core, and then installing replacement laminations formed of the iron-aluminum alloy at the core-end, again with the result that the laminations located at the core-ends are formed of an Fe—Al alloy that is different from the alloy of the laminations between the core ends.
摘要:
The aim of the invention is to ensure efficient coolilng in an electric rotary machine (2), in particular in a high-voltage generator. To achieve this, the invention provides a coolant channel (10) which extends in a radial direction and in which a number of high-voltage conductors (14) are located. A coolant gas is preferably used as the coolant. The advantage of positioning the high-voltage cables (14) in the coolant channels (10) is that the coolant comes into direct contact with said high-voltage cables (14), thus ensuring efficient and uniform cooling.
摘要:
a high-voltage generator, notches (3) leading radially inward are provided in each segmental lamination (1) on the radial outside of the laminated stator body and end in a relief opening. The notches (3) cause the amplitude and the frequency of, for example, a 4-node vibration occuring during operation to be limited to noncritical values, although the laminated body is undersized mechanically with regard to its yoke height (JH).
摘要:
A magnetic flux control means for a motor-generator, in which an annular member regulates the magnetic flux while the on-off operation of a switching means provides more than one constant voltage depending on the rpm of the rotor. A stator contains high-tension windings, low-tension windings and variable-voltage windings. A controller conducts the switching operation among the windings to produce any desired voltage of, for example a high-tension of 100V, a low-tension of 27V for automotive electrical equipment and a variable voltage for control of an actuator. The annular member may be arranged for angular movement with respect to the stator, either outside or inside the stator.
摘要:
A stator for a rotary machine includes a rotor 7 and a stator 8 having a stator iron core 15 disposed oppositely around the outer circumference of the rotor 7 and a stator coil 16 fitted around the iron core 15, wherein the iron core 15 has a laminated iron core 150 with plural axially extending slots 15a formed circumferentially at predetermined pitches, an insulating resin 100 is coated on an axial end face 15f of the iron core 15 and an inner wall face of a slot 15a in the laminated iron core 150 to provide insulation between the iron core 15 and the stator coil 16, and the iron core is cylindrically shaped by bringing both circumferential end portions 15g of the laminated iron core 150 into contact to bend the laminated iron core 150 so that an opening face 15b of the slot 15a is directed inside.
摘要:
A stator iron core 21 is formed by laminated iron cores 21a, in which a plurality of slots 24 are shaped with predetermined pitches in a peripheral direction. At least a portion of the laminated iron cores 21a corresponding to an end surface 27 of the stator iron core and inner peripheral walls of the slots 24 are coated with an insulative resin 100 to insulate the stator iron core 21 from a stator winding 22, whereby an insulating capability between the slots and the winding is high, and an a.c. generator for vehicle is easily produced with a low cost.